Vanguard Index Funds - Vanguard Mid-Cap ETF
US ˙ ARCA ˙ US9229086296

SecurityVO / Vanguard Index Funds - Vanguard Mid-Cap ETF
InstitutionNorthern Trust Corp
Latest Disclosed Ownership133,777 shares
Latest Disclosed Value $ 38,418,079
Northern Trust Corp reports 0.43% decrease in ownership of VO / Vanguard Index Funds - Vanguard Mid-Cap ETF

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 133,777 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF (US:VO) valued at $38,418,079 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 134,360 shares of Vanguard Index Funds - Vanguard Mid-Cap ETF. This represents a change in shares of -0.43% during the quarter. The current value of the position is $10,726,240 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 133,777 -583 -0.43 38,418 -1.47 0.0010
2026-02-17 2025-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 134,360 1,763 1.33 38,994 0.11 0.0010
2025-11-14 2025-09-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 132,597 5,615 4.42 38,949 9.61 0.0050
2025-08-13 2025-06-30 13F VANGUARD INDEX FDS MID CAP ETF 922908629 126,982 4,573 3.74 35,533 12.24 0.0049
2025-05-13 2025-03-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 122,409 11,146 10.02 31,657 7.72 0.0047
2025-02-14 2024-12-31 13F VANGUARD INDEX FDS MID CAP ETF 922908629 111,263 6,461 6.16 29,388 6.29 0.0042
2024-11-13 2024-09-30 13F VANGUARD INDEX FDS COM 922908629 104,802 5,786 5.84 27,650 15.34 0.0045
2024-08-14 2024-06-30 13F VANGUARD INDEX FDS COM 922908629 99,016 3,766 3.95 23,972 0.72 0.0040
2024-05-14 2024-03-31 13F VANGUARD INDEX FDS COM 922908629 95,250 5,200 5.77 23,799 13.60 0.0041
2024-02-13 2023-12-31 13F VANGUARD INDEX FDS COM 922908629 90,050 2,515 2.87 20,949 14.93 0.0038
2023-11-13 2023-09-30 13F VANGUARD INDEX FDS COM 922908629 87,535 -901 -1.02 18,228 -6.38 0.0035
2023-08-11 2023-06-30 13F VANGUARD INDEX FDS COM 922908629 88,436 4,222 5.01 19,470 9.62 0.0037
2023-05-15 2023-03-31 13F VANGUARD INDEX FDS COM 922908629 84,214 2,365 2.89 17,762 6.48 0.0035
2023-02-13 2022-12-31 13F VANGUARD INDEX FDS COM 922908629 81,849 -1,294 -1.56 16,682 6.73 0.0035
2022-11-14 2022-09-30 13F VANGUARD INDEX FDS COM 922908629 83,143 7,721 10.24 15,629 5.20 0.0036
2022-08-12 2022-06-30 13F VANGUARD INDEX FDS COM 922908629 75,422 -6,038 -7.41 14,856 -23.32 0.0032
2022-05-13 2022-03-31 13F VANGUARD INDEX FDS COM 922908629 81,460 17,707 27.77 19,374 19.28 0.0034
2022-02-08 2021-12-31 13F VANGUARD INDEX FDS COM 922908629 63,753 6,738 11.82 16,242 20.32 0.0027
2021-11-15 2021-09-30 13F VANGUARD INDEX FDS COM 922908629 57,015 -829 -1.43 13,499 -1.68 0.0024
2021-08-13 2021-06-30 13F VANGUARD INDEX FDS COM 922908629 57,844 2,475 4.47 13,730 12.04 0.0024
2021-05-12 2021-03-31 13F VANGUARD INDEX FDS COM 922908629 55,369 971 1.78 12,255 8.95 0.0023
2021-02-11 2020-12-31 13F VANGUARD INDEX FDS COM 922908629 54,398 7,621 16.29 11,248 36.42 0.0022
2020-11-16 2020-09-30 13F VANGUARD INDEX FDS COM 922908629 46,777 887 1.93 8,245 9.61 0.0018
2020-08-14 2020-06-30 13F VANGUARD INDEX FDS COM 922908629 45,890 -2,324 -4.82 7,522 18.51 0.0018
2020-05-14 2020-03-31 13F VANGUARD INDEX FDS COM 922908629 48,214 -10,373 -17.71 6,347 -39.20 0.0018
2020-02-14 2019-12-31 13F VANGUARD INDEX FDS COM 922908629 58,587 6,158 11.75 10,439 18.80 0.0023
2019-11-13 2019-09-30 13F VANGUARD INDEX FDS COM 922908629 52,429 129 0.25 8,787 0.50 0.0021
2019-08-13 2019-06-30 13F VANGUARD INDEX FDS COM 922908629 52,300 700 1.36 8,743 5.40 0.0021
2019-05-13 2019-03-31 13F VANGUARD INDEX FDS COM 922908629 51,600 -16,879 -24.65 8,295 -12.34 0.0020
2019-02-12 2018-12-31 13F VANGUARD INDEX FDS COM 922908629 68,479 18,974 38.33 9,463 16.41 0.0027
2018-11-14 2018-09-30 13F VANGUARD INDEX FDS COM 922908629 49,505 8,771 21.53 8,129 26.60 0.0020
2018-09-18 2018-06-30 13F/A-1 VANGUARD INDEX FDS COM 922908629 40,734 6,459 18.84 6,421 21.47 0.0016
2018-08-14 2018-06-30 13F VANGUARD INDEX FDS COM 922908629 40,734 6,459 6,421
2018-05-09 2018-03-31 13F VANGUARD INDEX FDS COM 922908629 34,275 417 1.23 5,286 0.88 0.0014
2018-02-14 2017-12-31 13F VANGUARD INDEX FDS COM 922908629 33,858 2,124 6.69 5,240 12.33 0.0013
2017-11-13 2017-09-30 13F VANGUARD INDEX FDS COM 922908629 31,734 -219,094 -87.35 4,665 -86.95 0.0012
2017-08-11 2017-06-30 13F VANGUARD INDEX FDS COM 922908629 250,828 220,338 722.66 35,748 741.92 0.0100
2017-05-12 2017-03-31 13F VANGUARD INDEX FDS COM 922908629 30,490 1,618 5.60 4,246 11.71 0.0012
2017-02-13 2016-12-31 13F VANGUARD INDEX FDS COM 922908629 28,872 -2,531 -8.06 3,801 -6.47 0.0012
2016-11-09 2016-09-30 13F VANGUARD INDEX FDS COM 922908629 31,403 2,134 7.29 4,064 12.33 0.0013
2016-08-12 2016-06-30 13F VANGUARD INDEX FDS COM 922908629 29,269 3,928 15.50 3,618 17.77 0.0012
2016-08-19 2016-03-31 13F/A-1 VANGUARD INDEX FDS COM 922908629 25,341 453 1.82 3,072 2.78 0.0010
2016-05-13 2016-03-31 13F VANGUARD INDEX FDS COM 922908629 25,341 3,072
2016-02-12 2015-12-31 13F VANGUARD INDEX FDS COM 922908629 24,888 -3,462 -12.21 2,989 -9.64 0.0010
2015-11-12 2015-09-30 13F VANGUARD INDEX FDS COM 922908629 28,350 28,350 0.00 3,308 0.0011
2015-08-13 2015-06-30 13F VANGUARD INDEX FDS COM 922908629 0 -20,757 -100.00 0 -100.00
2015-05-14 2015-03-31 13F VANGUARD INDEX FDS COM 922908629 20,757 2,866 16.02 2,754 24.56 0.0008
2015-02-12 2014-12-31 13F VANGUARD INDEX FDS COM 922908629 17,891 1,633 10.04 2,211 15.94 0.0007
2014-11-13 2014-09-30 13F VANGUARD INDEX FDS COM 922908629 16,258 -1,315 -7.48 1,907 -8.54 0.0006
2014-08-14 2014-06-30 13F VANGUARD INDEX FDS COM 922908629 17,573 -148 -0.84 2,085 3.58 0.0006
2014-05-14 2014-03-31 13F VANGUARD INDEX FDS COM 922908629 17,721 -5 -0.03 2,013 3.23 0.0006
2014-02-21 2013-12-31 13F/A-1 VANGUARD INDEX FDS COM 922908629 17,726 228 1.30 1,950 8.76 0.0006
2014-02-12 2013-12-31 13F VANGUARD INDEX FDS COM 922908629 17,726 1,950
2013-11-13 2013-09-30 13F VANGUARD INDEX FDS COM 922908629 17,498 -1,270 -6.77 1,793 0.39 0.0006
2013-08-09 2013-06-30 13F VANGUARD INDEX FDS COM 922908629 18,768 18,768 1,786 0.0006
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.